<!DOCTYPE html>
<html lang="en">
<head>
  <meta charset="UTF-8">
  <meta name="viewport" content="width=device-width, initial-scale=1.0">
  <title>Document</title>
</head>
<body>
  <form method="post" action="http://localhost:3000">
    <input type="text" name="">
    <input type="password" name="username" id="">
    <input type="submit" name="password" value="提交">
  </form>
</body>
</html>